/*
Universal Molotilka 1.0
Copyright (c) 2011, 2012, Alexey Silaev ArchFurry@gmail.com
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this 
		list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, 
		this list of conditions and the following disclaimer in the documentation
		and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include <stdint.h>
#include <stdio.h>

#include "cipher.h"
#include "cipher_init.h"
#include "common.h"

void UMcipher_init
 (size_t block_size, uint32_t key, uint32_t sub_key,
  uint8_t *key_table, struct UMcipher_context *umc)
 {
	umc->block_size = block_size;
	umc->key = key;
	umc->sub_key = sub_key;
	umc->table = key_table;
	umc->flag = SAFE_FILE_ENC;
 }
 
void UMcipher_simple_init_key_file
 (size_t block_size, char *password,
  char *key_file_name, struct UMcipher_context *umc)
 {
	uint32_t key, sub_key;
	uint8_t *key_table;
	
	UMcipher_calc_key_pair(password, &key, &sub_key);
	key_table = read_key_file(key_file_name);
	
	UMcipher_init(block_size, key, sub_key, key_table, umc);
 }
 
void UMcipher_simple_init_token
 (size_t block_size, char *password,
  uint32_t *token, struct UMcipher_context *umc)
 {
	uint32_t key, sub_key;
	uint8_t *key_table;
	
	UMcipher_calc_key_pair(password, &key, &sub_key);
	
	key_table = UMcipher_token(token);

	UMcipher_init(block_size, key, sub_key, key_table, umc);
 }
 
 

